Malicious PDF — malware analysis report

Static analysis result for SHA-256 72158451fd8a01c5…

MALICIOUS

PDF

85.4 KB Created: 2021-03-09 01:13:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdccb3d789eff1c350f26e4d52e5c1f8 SHA-1: e44329f7695765cd9787f996336ff0a7f913feff SHA-256: 72158451fd8a01c5f7d3b21486b317f5311796c427e05da506d10756cfae3106
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains an embedded URL that directs users to a website disguised as a rehabilitation exercise guide. This URL is likely intended to host a phishing page or download further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://leonvi.ru/award?keyword=groin+strain+rehabilitation+exercises+pdf
    • https://cdn.sqhk.co/jasuxerazifo/dhaYjcU/super_vegas_slots_casino_slot_machines_apk.pdf
    • https://cdn.sqhk.co/noperizapewo/MgejjhK/murder_the_king_flash_game.pdf
    • https://cdn.sqhk.co/tabewinudeka/fm5Bhbf/fexomeranununapeti.pdf
    • https://cdn.sqhk.co/nodujugebi/ijifgcH/overlord_sea_monster.pdf
    • https://cdn.sqhk.co/widexerun/iaic4ib/android_keyboard_for_seniors.pdf
    • https://cdn.sqhk.co/mowanideju/603gdjg/emotional_freedom_technique_training_online.pdf
    • http://pepojen.iblogger.org/neca_manual_of_labor_units_mlu.pdf
    • https://cdn.sqhk.co/dimumaneda/6gfjcNq/emergency_alerts_iphone_sound.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/retisovojor/line_6_floor_pod_manual_portugues.pdf
    • https://s3.amazonaws.com/tirimofufemukat/bodyguard_movie_songs_free_320kbps.pdf
    • https://s3.amazonaws.com/lumixi/sofuxogevigo.pdf
    • https://s3.amazonaws.com/mejobu/camera_raw_7._4_windows.pdf
    • http://dijinisefiregot.rf.gd/cakewalk_guitar_studio.pdf
    • https://s3.amazonaws.com/piradi/electron_energy_and_light_worksheet.pdf
    • http://jerefepebox.epizy.com/tipos_de_barrenas_de_perforacion.pdf
    • https://s3.amazonaws.com/juliziwojatige/90599566681.pdf
    • https://s3.amazonaws.com/negonanopix/rimupafewemoluxixaso.pdf
    • http://pejijolefisawiw.epizy.com/43003482259.pdf
    • https://s3.amazonaws.com/xefezesebusu/52403081961.pdf
    • https://s3.amazonaws.com/rotowan/kutunitewigiwaniwitadodu.pdf
    • https://s3.amazonaws.com/xulepiwa/how_to_set_time_casio_wave_ceptor.pdf
    • http://muxajetolalet.epizy.com/limorugigatovasegetux.pdf
    • https://s3.amazonaws.com/fizufapu/gunijamukexak.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001110f.bin
f0fb3b059ecdaf3cb92c5f425d3e622980ff87ec6629389fd2a2549a711c3ae7
pdf-font-stream PDF embedded font (sfnt) at offset 0x1110F 5480 bytes
font_01_sfnt_off000123b1.bin
0dbb49db1ae5f9338af4aa014a4c23e71a3f38c0b8fe5693c4ad4c6fd6de9554
pdf-font-stream PDF embedded font (sfnt) at offset 0x123B1 10640 bytes